    * {
        margin: 0;
        padding: 0;
    }

    .container {
        width: 400px;
        margin: 0 auto;
    }

    h2{
        text-align: center;
        padding: 30px 0;
    }

    .row {
        height: 40px;
        //意为弹性布局
        display: flex;
        //对齐方式
        //justify-content: center;
        //交叉轴方向上的对齐方式
        align-items: center;
    }

    span {
        width: 100px;
        line-height: 40px;
    }

    .edit {
        width: 200px;
        height: 30px;
    }

    .submit {
        width: 350px;
        height: 40px;
        color: white;
        background-color: orange;
        border: none;
    }